I purchased these for use at a sports gym during the COVID-19 pandemic, but I didn't use them much and they've been stored away. I do not accept returns, so please consider purchasing only if you understand that these are used items. Also, please feel free to comment if you would like additional photos. ◇ Nike NIKE Men's Running Shoes Air Zoom Structure 20 849576002 2990. Dynamic Support midsole allows for smooth weight transfer. The Dynamic Support midsole provides a smooth transition from heel strike to toe-off. The Flymesh upper and midfoot structure provide support in each zone and a secure fit for the entire foot. Dynamic Fit technology secures the foot. Flywire cables and the top two eyelets are integrated to enhance support. The durable honeycomb pattern outsole provides excellent traction on all surfaces. ■ Country of origin: China ■ Upper material: Synthetic fiber (mesh) ■ Sole material: Rubber sole (BRS1000 + solid rubber) ■ Completion time: Full marathon 5 hours ■ Shape: Laces ■ Purpose: Running ■ Pronation: Neutral/Over ■ Weight per shoe (representative size): 322 g ■ Width: 2E Color: Gray (Black x White x Cool Gray x Pure Platinum x Wolf Gray) Shoe width: 2E (Normal) Upper material: Other synthetic fibers Heel shape: Flat heel